Question: which type of quantum particle that interaction  gravity starts with q
Paraphrase: which type of quantum particle that interaction gravity begins with q
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q22675015 . ?sbj wdt:P517 wd:Q11412 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'q')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: quark, quark